Answer:
Mark can travel 93.97 miles in 1 hour
Step-by-step explanation:
Mark's rate of travel is 42 m / sec. We want the same quantity in mi / hr.
Multiply 42 m / sec by the conversion factor
1 mile
----------------
1609.34 m
obtaining the following result in miles / sec:
42 m 1 mile
---------- * ------------------ = 0.0261 mi/sec
sec 1609.34 m
Finanally, multiply the above result by the conversion factor 3600 sec / 1 hr:
(0.0261 mi/sec)(3600 sec / hr) = 93.97 miles
Mark can travel 93.97 miles in 1 hour
